Behavior of Clayey Soil Stabilized with Rice Husk Ash & Lime

Behavior of Clayey Soil Stabilized with Rice Husk Ash & Lime

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2014 by IJETT Journal
Volume-11 Number-1                          
Year of Publication : 2014
Authors : B.Suneel Kumar , T.V.Preethi
  10.14445/22315381/IJETT-V11P209

Citation 

B.Suneel Kumar , T.V.Preethi. "Behavior of Clayey Soil Stabilized with Rice Husk Ash & Lime ", International Journal of Engineering Trends and Technology (IJETT), V11(1),44-48 May 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract

In India the soil mostly present is Clay, in which the construction of sub grade is problematic. In recent times the demands for sub grade materials has increased due to increased constructional activities in the road sector and due to paucity of available nearby lands to allow excavate fill materials for making sub grade. In this situation, a means to overcome this problem is to utilize the different alternative generated waste materials, which cause not only environmental hazards and also the depositional problems. Keeping this in view stabilization of weak soil in situ may be done with suitable admixtures to save the construction cost considerably. The present investigation has therefore been carried out with agricultural waste materials like Rice Husk Ash (RHA) which was mixed with soil to study improvement of weak sub grade in terms of compaction and strength characteristics. Silica produced from rice husk ashes have investigated successfully as a pozzolanic material in soil stabilization. However, rice husk ash cannot be used solely since the materials lack in calcium element. As a result, rice husk ash shall be mixed with other cementitious materials such as lime and cement to have a solid chemical reaction in stabilization process. Lime is calcium oxide or calcium hydroxide. It is the name of the natural mineral (native lime) CaO occurs as a product of coal seam fires and in altered lime stone xenoliths in volcanic ejection. In this study RHA and Lime is mixed in different percentage like (RHA as 5%, 10%, and 15%) and (Lime as 3%, 6%, 9%) and laboratory test CBR is done with a curing period of 4, 7 and 14 days with different percentages of RHA & Lime and Lime+ RHA.

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Keywords
California Bearing Ratio (CBR), clayey soil, Lime, Rice Husk Ash (RHA), Unconfined Compressive Strength (UCC).